00:01
We are told that it takes a teacher to grade a certain set of quizzes 30 minutes and that their aid takes twice as long.
00:10
So 60 minutes.
00:15
We're going to use this table to organize the rate, time, and work.
00:19
So the teacher is one job in 30 minutes or one job for every 30 minutes.
00:27
You can also read this as one 30th of the job per minute.
00:32
We don't know how long it's going to be.
00:34
Be, but they're going to be working together for the same amount of time.
00:38
So i'll put m for minutes.
00:40
And the work of the teacher would be the product of the rate and the time.
00:44
So 1 .30th of m.
00:49
Or you could also write that as m over 30.
00:54
Same for the ta.
00:55
One over 60.
00:57
One job for every 60 minutes or 160th of the job per minute.
01:03
So then that's m over 30...